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A novel UASB-MFC-BAF integrated system for high strength molasses wastewater treatment and bioelectricity generation

文献类型： 外文期刊

作者： Zhang, Baogang 1 ; Zhao, Huazhang 1 ; Zhou, Shungui 2 ; Shi, Chunhong 3 ; Wang, Chao 1 ; Ni, Jinren 1 ;

作者机构： 1.Peking Univ, Dept Environm Engn, Key Lab Water & Sediment Sci, Minist Educ, Beijing 100871, Peoples R China

2.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China

3.Univ Sci & Technol Beijing, Dept Environm Engn, Beijing 100083, Peoples R China

关键词： Molasses wastewater;Microbial fuel cells;Sulfide;Electricity generation;Decolorization

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

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收录情况： SCI

摘要： An up-flow anaerobic sludge blanket reactor-microbial fuel cell-biological aerated filter (UASB-MFC-BAF) system was developed for simultaneous bioelectricity generation and molasses wastewater treatment in this study. The maximum power density of 1410.2 mW/m(2) was obtained with a current density of 4947.9 mA/m(2) when the high strength molasses wastewater with chemical oxygen demand (COD) of 127,500 mg/l was employed as the influent. The total COD, sulfate and color removal efficiencies of the proposed system were achieved of 53.2%, 52.7% and 41.1%, respectively. Each unit of this system had respective function and performed well when integrated together. The UASB reactor unit was mainly responsible for COD removal and sulfate reduction, while the MFC unit was used for the oxidation of generated sulfide with electricity generation. The BAF unit dominated color removal and phenol derivatives degradation. This study is a beneficial attempt to combine MFC technology with conventional anaerobic-aerobic processes for actual wastewater treatment.

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